#183B67#183B67

#183B67 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.1% C 0.087 H 255.5°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#183B67
RGB	rgb(24, 59, 103)
HSL	hsl(213, 62%, 25%)
HSV	hsv(213, 77%, 40%)
CMYK	cmyk(76.7%, 42.7%, 0%, 59.6%)
CIE-LAB	lab(24.64, 4.18, -29.48)
CIE-LCH	lch(24.64, 29.77, 278.08°)
OKLab	oklab(35.14% -0.0217 -0.0841)
OKLCH	oklch(35.14% 0.087 255.5)
XYZ	xyz(4.3879, 4.3009, 13.4282)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B67 #674418

analogous

#186267 #183B67 #1D1867

triadic

#183B67 #67183B #3B6718

tetradic

#183B67 #671862 #674418 #18671D

square

#183B67 #671862 #674418 #18671D

split-complementary

#183B67 #671D18 #626718

monochromatic

#060E19 #0C1F35 #183B67 #245799 #2F74CA

Accessibility & contrast

On white

11.29

#183B67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#183B67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B67

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B67	#FFFFFF	#000000	##FFFFFF
##183B67	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263E69

Deuteranopia (green-blind)

#1A3766

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183b67;
/* rgb */ color: rgb(24, 59, 103);
/* oklch */ color: oklch(35.1% 0.087 255.5);

Tailwind

colors: {
  custom: {
    50: '#617093',
    500: '#183b67',
    950: '#000000',
  },
}

SCSS

$custom: #183b67;
$custom-light: #617093;
$custom-dark: #000000;

JSON

{
  "hex": "#183b67",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 103
  },
  "hsl": {
    "h": 213.418,
    "s": 62.205,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35135,
    "c": 0.08688,
    "h": 255.5
  },
  "luminance": 0.04301
}

Semantic roles & 50–950 ramp

primary

#183B67

secondary

#9D733E

accent

#9D43E5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183B67

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →